(19)

(11)

EP 1 347 813 A1

(12)

(43) Date of publication: 01.10.2003 Bulletin 2003/40 (21) Application number: 01990714.6 (22) Date of filing: 21.11.2001

(51) International Patent Classification (IPC)7: B01D 35/06, B03C 1/00, B32B 7/12 (86) International application number: PCT/US0144/127 (87) International publication number: WO 0204/1969 (30.05.2002 Gazette 2002/22)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 27.11.2000 US 723008 11.10.2001 US 975889 (71) Applicant: Biocrystal, Ltd. Westerville, OH 44114-2518 (US)	(72) Inventors: BARBERA-GUILLEM, Emilio Powell, OH 44164 (US) THURSTON, Marlin, O. Westerville, OH 44114-2518 (US) (74) Representative: Ritter, Stephen David et al Mathys & Squire 100 Gray's Inn Road London WC1X 8AL London WC1X 8AL (GB)